calculate the resistance of a copper wire 1 km long and 0.50 mm diameter if the resistivity of copper is 1.7 into 10 to the power minus 8 ohm question
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lenght, l= 1000m
Diameter=0.50mm
Radius=0.25mm=0.25×10(-8)=0.00025m
Sp Resistence, p= 1.7×10(-8)
pl 1.7×10(-8)×1000
R = _ _ = _ _ _ _ _ _ _ _ _ _ _ _ = 85 ohm
0.25×10(-3)
Diameter=0.50mm
Radius=0.25mm=0.25×10(-8)=0.00025m
Sp Resistence, p= 1.7×10(-8)
pl 1.7×10(-8)×1000
R = _ _ = _ _ _ _ _ _ _ _ _ _ _ _ = 85 ohm
0.25×10(-3)
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